Heating device for bearing disassembly

Abstract

The utility model discloses a heating device for bearing disassembly, which belongs to the field of bearing disassembly and comprises an annular heater, a heating device and a heating device. The lifting assembly is used for driving the annular heater to ascend or descend; the guide assembly is used for guiding the lifting of the annular heater; and the movable base is used for bearing the annular heater, the guide assembly and the lifting assembly, is placed on the ground and can move on the ground. The bearing can be heated, after a bearing ring is heated and expanded, the bearing can be rapidly taken down from the main shaft, and the situation that the production takt of a steel coil is affected by maintenance is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing disassembly, and particularly relates to a heating device for bearing disassembly. Background Art

[0002] When a steel coil is produced, the steel coil needs to be placed on a feeding device and rotated for feeding, and then enter subsequent processing. The bearing is one of the important connecting parts for connection and transmission in the feeding device. During regular maintenance of the feeding device, the bearing needs to be disassembled and replaced. After the bearing is disassembled, if it continues to be used or the state of the bearing needs to be checked, its disassembly should also be carried out as carefully as during installation. Attention should be paid not to damage the parts of the bearing. In particular, the disassembly of an interference-fit bearing is difficult to operate.

[0003] In the prior art, the knocking method, the pulling method or the pushing method is commonly used for bearing disassembly. The knocking method is simple and easy to operate, but it is easy to damage the bearing; the pulling method requires a special pulling tool and is easy to cause excessive loosening or damage of the bearing; the pushing method uses a press to push the bearing, and the work is stable and reliable, but its use cost is relatively high. None of the above bearing disassembly methods can meet the requirements of fast-paced production, thus affecting the production and processing efficiency of steel coils. Content of the Utility Model

[0004] The purpose of the utility model is to provide a heating device for bearing disassembly, which heats the bearing. After the bearing ring expands due to heat, the bearing can be quickly removed from the main shaft, avoiding affecting the production rhythm of the steel coil due to maintenance.

[0005] The purpose of the utility model is realized as follows: A heating device for bearing disassembly includes: an annular heater with an avoidance part provided at the center for the bearing to pass through, which is used to heat the bearing; a lifting assembly for driving the annular heater to rise or fall; a guiding assembly for guiding the lifting of the annular heater; and a moving base for carrying the annular heater, the guiding assembly and the lifting assembly, which is placed on the ground and can move on the ground.

[0006] When the utility model is used, the annular heater is moved up and down through the lifting assembly until it is on the same axis as the bearing; the moving base is pushed so that the annular heater and the bearing are in the same vertical direction; the annular heater is powered on to heat the bearing; after heating to a certain temperature, the inner diameter of the bearing ring becomes larger due to heat expansion, which is convenient for the operator to remove the bearing from the main shaft. Compared with the prior art, the beneficial effects of the utility model are as follows: The device has a small volume, does not need to occupy a large space, is not limited by the installation space, and is convenient for moving and handling; by heating the bearing, its inner hole thermally expands to a certain value, and it is removed from the main shaft in a hot state and cooled at room temperature. This disassembly method is applicable to interference-fit bearings and can ensure the integrity of the bearing during disassembly.

[0007] As a further improvement of the present utility model, the annular heater includes a housing, an annular skeleton, and several groups of heating wires. The several groups of heating wires are evenly distributed in a circumferential manner centered on the axis of the annular skeleton.

[0008] As a further improvement of the present utility model, the lifting assembly includes an adjustment screw rod vertically arranged. The adjustment screw rod is in threaded connection with a positioning sleeve. The positioning sleeve is arranged on the moving base. A rotating handwheel is arranged at the upper end of the adjustment screw rod, and the lower end is connected to the annular heater through a fixed seat.

[0009] As a further improvement of the present utility model, the adjustment screw rod includes a rod body. A positioning block is arranged at the lower end of the rod body. A hollow cavity is arranged in the fixed seat to allow the positioning block to rotate relative to the fixed seat.

[0010] As a further improvement of the present utility model, the guiding assembly includes two symmetrically arranged guiding rods. The inner ends of the guiding rods are arranged on the fixed seat, and the outer ends are rotatably provided with rollers. The two rollers are in rolling connection with corresponding positioning tracks. The two positioning tracks are vertically arranged on the moving base.

[0011] As a further improvement of the present utility model, the moving base includes a bottom plate. A left side plate and a right side plate are arranged on the upper side of the bottom plate. A cover plate is arranged between the left side plate and the right side plate. The positioning sleeve is arranged on the cover plate. The two positioning tracks are respectively arranged on the inner sides of the left side plate and the right side plate. Four universal wheels are arranged in a rectangular distribution on the lower side of the bottom plate.

[0012] As a further improvement of the present utility model, two symmetrically distributed handles are arranged on the front side of the moving base. Anti-slip sleeves are arranged on the handles. Description of the Drawings

[0013] Figure 1 It is the front view of the present utility model.

[0014] Figure 2 It is the partial cross-sectional view of the present utility model.

[0015] Figure 3 It is the side view of the adjustment screw rod of the present utility model.

[0016] Among them, 1 is the annular heater, 101 is the housing, 102 is the annular skeleton, 103 is the heating wire, 2 is the adjustment screw rod, 201 is the rod body, 202 is the positioning block, 3 is the positioning sleeve, 4 is the rotating handwheel, 5 is the fixed seat, 6 is the guiding rod, 7 is the roller, 8 is the positioning track, 9 is the bottom plate, 10 is the left side plate, 11 is the right side plate, 12 is the cover plate, 13 is the universal wheel, 14 is the handle, and 15 is the anti-slip sleeve. Detailed Embodiment

[0017] Such asFigures 1 - 3 As shown, it is a heating device for bearing disassembly, including: an annular heater 1, with an avoidance part provided at the center to allow the bearing to pass through, for heating the bearing; a lifting assembly for driving the annular heater 1 to rise or fall; a guiding assembly for guiding the lifting of the annular heater 1; and a moving base for carrying the annular heater 1, the guiding assembly and the lifting assembly, placed on the ground and movable on the ground.

[0018] In this embodiment, the annular heater 1 includes a housing 101, an annular skeleton 102, and ten groups of heating wires 103. The ten groups of heating wires 103 are evenly distributed in a circle centered on the axis of the annular skeleton 102; the lifting assembly includes a vertically arranged adjusting screw 2, and the adjusting screw 2 is threadedly connected to the positioning sleeve 3. Specifically, an external thread is provided on the outer periphery of the adjusting screw 2, and a threaded through hole is provided on the positioning sleeve 3; the positioning sleeve 3 is arranged on the moving base, a rotating handwheel 4 is arranged at the upper end of the adjusting screw 2, and the lower end is connected to the annular heater 1 through a fixing seat 5; specifically, the adjusting screw 2 includes a rod body 201, a positioning block 202 is arranged at the lower end of the rod body 201, and a hollow cavity is provided in the fixing seat 5 to allow the positioning block 202 to rotate relative to the fixing seat 5, as Figure 3 shown; the guiding assembly includes two symmetrically arranged guiding rods 6. The inner ends of the guiding rods 6 are arranged on the fixing seat 5, and the outer ends are rotatably provided with rollers 7. The two rollers 7 are in rolling connection with corresponding positioning tracks 8. The two positioning tracks 8 are vertically arranged on the moving base; the moving base includes a bottom plate 9, a left side plate 10 and a right side plate 11 are arranged on the upper side of the bottom plate 9, a cover plate 12 is arranged between the left side plate 10 and the right side plate 11, the positioning sleeve 3 is arranged on the cover plate 12, and the two positioning tracks 8 are respectively arranged on the inner sides of the left side plate 10 and the right side plate 11. Four universal wheels 13 are arranged in a rectangular distribution on the lower side of the bottom plate 9; two symmetrically distributed handles 14 are arranged on the front side of the moving base, and anti-slip sleeves 15 made of heat-resistant materials are arranged on the handles 14.

[0019] When the utility model is in use, the operator pushes the device to the front of the main shaft, rotates the rotary handwheel 4 to raise or lower the annular heater 1 until it is on the same axis as the main shaft, and then pushes the handle 14 to make the annular heater 1 in the same vertical direction as the bearing. Then, the power supply of the annular heater 1 is turned on to heat the bearing, so that its inner diameter thermally expands to a certain value, and it can be easily removed from the main shaft in the hot state. The advantages of the utility model are as follows: the annular heater 1 can make the bearing uniformly heated, improving the efficiency of bearing disassembly; the adjusting screw 2 and the positioning sleeve 3 cooperate to accurately and stably control the height of the annular heater 1. While providing a guiding function, the guiding component can prevent the annular heater 1 from shaking during movement; using this device to disassemble the bearing not only ensures the integrity of the bearing, but also ensures the production rhythm and the production efficiency of the steel coil; this device is also applicable to the disassembly operation of bearings on various equipment, with high compatibility and high use and popularization value.

[0020] The utility model is not limited to the above embodiments. Based on the technical solutions disclosed in the utility model, those skilled in the art can make some substitutions and deformations to some technical features without creative labor according to the disclosed technical content, and these substitutions and deformations are all within the protection scope of the utility model.

Claims

1. A heating device for bearing disassembly, characterized in that: include: The ring heater has a relief portion at the center to allow the bearing to pass through, which is used to heat the bearing; A lifting assembly, used for driving the annular heater to rise or fall; A guide assembly, used for guiding the lifting and lowering of the annular heater; The mobile base is used to carry the annular heater, the guide assembly and the lifting assembly, and is placed on the ground and can move on the ground.

2. A heating device for bearing disassembly according to claim 1, characterized in that: The annular heater comprises an outer shell, an annular frame and a plurality of groups of heating wires, wherein the plurality of groups of heating wires are evenly distributed in a circle with the axis of the annular frame as the center.

3. A heating device for bearing disassembly according to claim 1, characterized in that: The lifting assembly comprises a vertically arranged adjusting screw, the adjusting screw is threadedly connected to a positioning sleeve, the positioning sleeve is arranged on a movable base, a rotating hand wheel is arranged at the upper end of the adjusting screw, and the lower end is connected to the annular heater through a fixing seat.

4. A heating device for bearing disassembly according to claim 3, characterized in that: The adjusting screw comprises a rod body, a positioning block is arranged at the lower end of the rod body, and a hollow cavity is arranged in the fixing seat to allow the positioning block to rotate relative to the fixing seat.

5. A heating device for bearing disassembly according to claim 3, characterized in that: The guide assembly includes two symmetrically arranged guide rods, wherein the inward end of the guide rod is arranged on a fixed seat, and the outward end is rotatably provided with a roller, the two rollers are rollingly connected to the corresponding positioning rails, and the two positioning rails are vertically arranged on the mobile base.

6. A heating device for bearing disassembly according to claim 5, characterized in that: The mobile base includes a bottom plate, a left side plate and a right side plate are arranged on the upper side of the bottom plate, a cover plate is arranged between the left side plate and the right side plate, the positioning sleeve is arranged on the cover plate, the two positioning rails are respectively arranged on the inner side of the left side plate and the right side plate, and four universal wheels distributed in a rectangular shape are arranged on the lower side of the bottom plate.

7. A heating device for bearing disassembly according to any one of claims 1 to 6, characterized in that: Two handles symmetrically distributed to each other are arranged on the front side of the mobile base, and anti-slip sleeves are arranged on the handles.

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